Saturday I picked up my bike from putting new tires on it rode home. The next day my bike didn't want to start then finally turned over. It didn't want stay running and died. I now see a fault code 20 and the check engine light is on. I had a PCV put on and dyno tuned the previous week. The service manual says it's related to the atmospheric pressure sensor or the intake pressure sensor. How do I meter that out? Do I have leave it plugged in and the ignition on but not running? They are the same part but in different locations. Do I poke into the wire on the plug?